Granted Patent
Utility
US 6,797,423 · App. 09/963,977
High-temperature fuel cell
Inventors:
Robert Fleck, Wolfram Kaiser
Patented Case
View Patent ↗
Granted: Sep 28, 2004
Filed: Sep 26, 2001
Inventors
Robert Fleck
Wolfram Kaiser
Assignee (at issue)
Siemens Aktiengesellschaft
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.